NAVFAC – Carnaghi Machine Foundation

Design-build pile foundation for an equipment pad to support machinery that fabricates submarine parts (self performed by the US Navy). Over 400 cubic yards of concrete were poured for the equipment pad which required a deep-foundation to support the pad in the soft soils.

Project Summary:

  • Helical Pile Type: Stelcor – SC1600
  • # of Helical Piles: 64
  • Location: Philadelphia, PA
  • Installation Depth: 40′
  • Helix Plates/Ultimate Pile Capacity: 55 Ton Ultimate
  • Equipment Used: Prodig V50 Drive motor – Marian Digital torque Indicator
  • Challenge/Unique Aspect: The constantly cycling equipment utilized in the manufacturing process for this new facility raised questions concerning critical settlement tolerances for foundation piles. Pile Installation in a fully operational, secured Naval facility with limited access, at the bottom of a 15′ deep sheeted pit, all contributed to the decision to use STELCOR. Danbro value engineered the project using STELCOR saving time and money over the alternate plan of splicing and driving 80′ long H-Piles in an existing building.
  • Engineer/Architect: Gencorelli Engineering; GZA GeoEnvironmental, Inc.
  • General Contractor: McCrossin Construction LLC